NDLI: New Wide-Area Algorithms for Detection and Mitigation of Angle Instability using Synchrophasors

Content Provider	IEEE Xplore Digital Library
Author	Dongchen Hu Venkatasubramanian, V.
Copyright Year	2007
Description	Author affiliation: Electr. Power Res. Inst., Palo Alto, CA (Dongchen Hu)
Abstract	Electric power system is undergoing major technological advances with many new installations of synchrophasors across the North American grid as well in power systems all over the world. Wide-area monitoring system (WAMS) in the Pacific Northwest and the Eastern Interconnection Phasor Project (EIPP) in the eastern grid are examples of such installations. Synchrophasors together with modern communication technology facilitate the monitoring of the current state of the power system including the phase angles of the bus voltages at critical buses in a time-synchronized fashion. The algorithms and the controller proposed in this paper detect the fast separation of phase angles among the critical areas automatically by using the synchrophasors, and proceed to mitigate the emerging angle instability by triggering suitable control action. Briefly, the algorithms initiate tripping of critical generators in the accelerating part of the system when necessary, and also initiate load shedding in the decelerating part of the system whenever necessary. The novelty of the algorithms is in the fact that all the decisions are made in real-time purely based on the wide-area synchrophasor measurements without any knowledge of the details of relay actions that may have resulted in the angle instability phenomenon.
Starting Page	1
Ending Page	8
File Size	259375
Page Count	8
File Format	PDF
ISBN	142441296X
ISSN	19325517
DOI	10.1109/PES.2007.385818
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-06-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power system interconnection Monitoring Automatic control Power systems Communications technology Voltage Communication system control Phase detection Acceleration Relays power system protection Power system stability power system control power system transient stability
Content Type	Text
Resource Type	Article

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